Angel Pons | ae59387 | 2020-04-04 18:50:57 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Marc Jones | bc94aea | 2018-09-26 09:57:08 -0600 | [diff] [blame] | 2 | |
| 3 | #include <device/device.h> |
| 4 | #include <device/pci.h> |
| 5 | #include <device/pci_ids.h> |
Marc Jones | bc94aea | 2018-09-26 09:57:08 -0600 | [diff] [blame] | 6 | #include <lib.h> |
| 7 | |
| 8 | static void iommu_read_resources(struct device *dev) |
| 9 | { |
| 10 | struct resource *res; |
| 11 | |
| 12 | /* Get the normal pci resources of this device */ |
| 13 | pci_dev_read_resources(dev); |
| 14 | |
| 15 | /* Add an extra subtractive resource for both memory and I/O. */ |
| 16 | res = new_resource(dev, 0x44); |
| 17 | res->size = 512 * 1024; |
| 18 | res->align = log2(res->size); |
| 19 | res->gran = log2(res->size); |
| 20 | res->limit = 0xffffffff; /* 4G */ |
| 21 | res->flags = IORESOURCE_MEM; |
| 22 | } |
| 23 | |
| 24 | static struct pci_operations lops_pci = { |
| 25 | .set_subsystem = pci_dev_set_subsystem, |
| 26 | }; |
| 27 | |
| 28 | static struct device_operations iommu_ops = { |
| 29 | .read_resources = iommu_read_resources, |
| 30 | .set_resources = pci_dev_set_resources, |
| 31 | .enable_resources = pci_dev_enable_resources, |
Marc Jones | bc94aea | 2018-09-26 09:57:08 -0600 | [diff] [blame] | 32 | .ops_pci = &lops_pci, |
| 33 | }; |
| 34 | |
Marshall Dawson | ec63a71 | 2019-05-03 12:55:16 -0600 | [diff] [blame] | 35 | static const unsigned short pci_device_ids[] = { |
| 36 | PCI_DEVICE_ID_AMD_15H_MODEL_303F_NB_IOMMU, |
| 37 | PCI_DEVICE_ID_AMD_15H_MODEL_707F_NB_IOMMU, |
Furquan Shaikh | 590bdc6 | 2020-04-15 23:00:44 -0700 | [diff] [blame] | 38 | PCI_DEVICE_ID_AMD_17H_MODEL_1020_NB_IOMMU, |
Marshall Dawson | ec63a71 | 2019-05-03 12:55:16 -0600 | [diff] [blame] | 39 | 0 |
| 40 | }; |
| 41 | |
Marc Jones | bc94aea | 2018-09-26 09:57:08 -0600 | [diff] [blame] | 42 | static const struct pci_driver iommu_driver __pci_driver = { |
| 43 | .ops = &iommu_ops, |
| 44 | .vendor = PCI_VENDOR_ID_AMD, |
Marshall Dawson | ec63a71 | 2019-05-03 12:55:16 -0600 | [diff] [blame] | 45 | .devices = pci_device_ids, |
Marc Jones | bc94aea | 2018-09-26 09:57:08 -0600 | [diff] [blame] | 46 | }; |